The Dassault Falcon has noticable jaggies wing/flaps,At the rear of the aircraft where the blue ends its jaggy,Rego in spots.
The GOL 737 looks to lack quality,the nose is soft,GOL titling looks jaggy,tail looks abit jaggy.

RS,
I'd probably have rejected them for being a bit grainy, rather than for being overshapened. It's also true that oversharping pics means also to make them to become grainy. Both of them (especially the falcon one) suffer from this issue.

I think the problem with the first one is similar to a problem I had with a rejection recently. I thought everything looked fine and was surprised by the rejection as well. The rejection included a personal note from the screener saying the background was in sharper focus than the aircraft. It was something I didn't even notice until it was pointed out to me. I think your 737 pic has a similar thing going on. Unfortunately, I don't think there is much you can do about that.

ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.

I agree here. The Gol aircraft looks blurry, and the intention to compensate that may have led to some jaggies, but I don´t think the quality can be saved.
The Falcon is clearly jagged in the fuselage windows, blue/white colour transition, nose landing gear, registration, flap and slats sections and the reflections around the aileron.
I think I see some compression artifacts in the background wings as well, but I´m not sure.

Hope it helps.

Cheers!
Lanas.-

"Faithless is he that says farewell when the road darkens." J.R.R. Tolkien